Printhead die

Patent metadata

Field	Value
Publication number	US-2016009082-A1
Application number	US-201314771008-A
Country	US
Kind code	A1
Filing date	Jun 17, 2013
Priority date	Feb 28, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

In one example, a printhead die includes a structure having a thickness 100 μm or less and a ratio of length to width of at least 50 and containing, within its thickness, multiple fluid ejectors and multiple fluid chambers each near an ejector and each having an inlet through which printing fluid may enter the chamber and an outlet through which printing fluid may be ejected from the chamber.

First claim

What is claimed is:

1 . A printhead die, comprising a structure having a thickness 100 μm or less and a ratio of length to width of at least 50, the structure containing, within its thickness, multiple fluid ejectors and multiple fluid chambers each near an ejector and each having an inlet through which printing fluid may enter the chamber and an outlet through which printing fluid may be ejected from the chamber.

2 . The printhead die of claim 1 , wherein the structure is at least 25 mm long and less than or equal to 200 μm wide.

3 . The printhead die of claim 2 , further comprising a molding, the structure embedded in the molding and the molding having a channel therein through which printing fluid may pass directly to the structure.

4 . The printhead die of claim 3 , wherein the channel has a width of 90 μm or less.

5 . The printhead die of claim 4 , wherein the structure also contains within its thickness:
multiple ports connected to the channel such that printing fluid can flow from the channel directly into the ports; and a manifold connected between the ports and the inlets such that printing fluid can flow from the ports directly into the manifold to the inlets.

6 . The printhead die of claim 5 , wherein each port is tapered from a broader part at the channel to a narrower part at the manifold.

7 . The printhead die of claim 6 , wherein the channel is tapered from a broader part away from the ports to a narrower part at the ports.

8 . A printhead, comprising a printhead die having a thickness 100 μm or less molded into a monolithic body with a channel therein through which printing fluid may pass directly to the die.

9 . The printhead of claim 8 , wherein the printhead die has a generally rectangular perimeter characterized by a ratio of length to width of at least 50.

10 . The printhead of claim 9 , wherein the body has a thickness of 500 μm or less.

11 . The printhead of claim 10 , wherein the printhead die comprises multiple printhead dies each having a thickness 100 μm or less and a generally rectangular perimeter characterized by a ratio of length to width of at least 50, the printhead dies arranged parallel to one another in the body and the channel comprises multiple channels each through which printing fluid may pass to one of the dies.

12 . The printhead of claim 11 , wherein
each channel has a width of 90 μm or less; and each printhead die contains, within its thickness:
multiple fluid ejectors;
multiple fluid chambers each near an ejector, each chamber having an inlet through which printing fluid may enter the chamber and an outlet through which printing fluid may be ejected from the chamber;
multiple ports connected to a channel such that printing fluid can flow from the channel directly into the ports; and
a manifold connected between the ports and the inlets such that printing fluid can flow from the ports directly into the manifold to the inlets.

13 . A print bar, comprising:
a mounting structure; and a printhead mounted to the mounting structure, the printhead including multiple printhead dies molded into a monolithic body and arranged parallel to one another in the body and the body having multiple channels therein through which printing fluid may pass directly to the dies.

14 . The print bar of claim 13 , wherein the printhead comprises only one printhead.

15 . The print bar of claim 13 , wherein the printhead comprises multiple printheads arranged generally end to end in a staggered configuration in which each printhead overlaps an adjacent printhead and each printhead includes multiple printhead dies molded into a monolithic body and arranged parallel to one another in the body and each body having multiple channels therein through which printing fluid may pass directly to the dies

16 . The print bar of claim 13 , wherein each printhead die has a thickness less than or equal to 100 μm and a generally rectangular perimeter characterized by a ratio of length to width of at least 50.

17 . The print bar of claim 16 , wherein:
each channel has a width of 90 pm or less; and each printhead die contains, within its thickness:
multiple fluid ejectors;
multiple fluid chambers each near an ejector, each chamber having an inlet through which printing fluid may enter the chamber and an outlet through which printing fluid may be ejected from the chamber;
multiple ports connected to a channel such that printing fluid can flow from the channel directly into the ports; and
a manifold connected between the ports and the inlets such that printing fluid can flow from the ports directly into the manifold to the inlets.

Assignees

• Hewlett Packard Development Co

Inventors

• Chen Chien-Hua
• Cumbie Michael W
• Choy Silam J

Classifications

• B41J2/14201 Primary

  Structure of print heads with piezoelectric elements · CPC title

• B41J2/155 Primary

  for line printing · CPC title

• B41J2202/20

  Modules · CPC title

• B41J2/1637

  molding · CPC title

• B41J2/14129

  Layer structure · CPC title